Shaftless raw paper adjusting frame

Abstract

The utility model relates to the technical field of raw paper frame, concretely is a kind of shaftless raw paper adjusting frame, including rack, and the lifting frame of sliding installation in the rack, the paper clamping arm of sliding installation is on the lifting frame, installation component is provided in the rack, two main mounting racks are included in the installation component, the contact between two main mounting racks can constitute a "V" shape recess, adjusting component is provided in the installation component.The utility model sets up installation component and adjusting component, utilizes the "V" shape recess of the contact between main mounting rack and constitutes the preliminary positioning of raw paper roll quickly, then through the height adjustment of lifting frame can realize the coaxial centering between raw paper roll and support arm, effectively shorten the time of roll change and improve the precision of roll change.Through the distance between two auxiliary frames is adjusted, so different width raw paper roll can be supported, the applicability of device can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of paper holder technology, specifically a shaftless paper adjusting holder. Background Technology

[0002] The hydraulic shaftless paper roll holder uses support arm structures at both ends of the paper roll, eliminating the need for a central shaft to support the paper roll. This provides greater space and freedom, making the loading and unloading of the paper roll more convenient. At the same time, by controlling the hydraulic oil through the hydraulic system to push the hydraulic rods on both sides to extend and retract, the corresponding rollers or support arms move up and down, thereby adjusting the height of the paper roll holder to adapt to different paper roll sizes, weights, and positional requirements.

[0003] When changing the paper roll in a shaftless paper roll adjusting frame, the paper roll and the support arm need to be coaxial. The current method is to achieve this by hoisting and manual assistance. Due to the large mass and volume of the paper roll, manual alignment is not only time-consuming and labor-intensive, but also inconvenient and affects feeding efficiency.

[0004] In view of this, we propose a shaftless paper adjusting frame. Utility Model Content

[0005] The purpose of this utility model is to provide a shaftless paper adjusting frame, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A shaftless paper adjusting frame includes a frame and a lifting frame slidably installed within the frame. A paper clamping arm is slidably installed on the lifting frame. An installation assembly is provided within the frame. The installation assembly includes two main mounting frames. The two main mounting frames can contact each other to form a "V"-shaped groove. An adjusting component is provided within the installation assembly.

[0007] Preferably, the mounting assembly further includes a base, on which a sliding groove is formed, and a sliding seat is slidably mounted in the sliding groove. The sliding seat is fixedly connected to the main mounting frame, and a bidirectional lead screw is rotatably mounted in the base. The bidirectional lead screw is threadedly connected to the sliding seat.

[0008] Preferably, multiple main buffer rollers are fixedly installed on the main mounting frame, and the multiple main buffer rollers are distributed in an array. The center of the main mounting frame and the lifting frame are on the same horizontal line.

[0009] Preferably, the adjustment component includes a second slide groove, which is formed at the top of the sliding seat. An auxiliary frame is slidably connected inside the second slide groove, and multiple auxiliary buffer rollers are fixedly installed on the auxiliary frame.

[0010] Preferably, the auxiliary frame has the same cross-section as the main mounting frame, and the width of the auxiliary frame is smaller than that of the main mounting frame.

[0011] Preferably, an opening is provided through the side of the base, the opening is connected to the slide groove, and the opening is located near both ends of the base.

[0012] Preferably, a lifting lug is fixedly installed on the auxiliary frame, and a bolt is threaded through the lifting lug. A sliding groove is provided on the sliding seat, and the bolt is slidably connected to the sliding groove.

[0013] Preferably, a scale is provided on one side of the sliding seat, and a pointer is fixedly installed on the side of the lifting lug near the scale.

[0014] By employing the above technical solution, this utility model provides a shaftless paper adjusting frame that has at least the following beneficial effects: This invention, by setting up installation and adjustment components, utilizes the "V"-shaped groove formed by the contact between the main mounting frames to quickly perform initial positioning of the paper roll. Then, by adjusting the height of the lifting frame, coaxial alignment between the paper roll and the support arm can be achieved, effectively shortening the roll changing time and improving the roll changing accuracy.

[0015] This invention allows for the support of paper rolls of varying widths by adjusting the distance between the two auxiliary frames within the adjustment assembly, effectively improving the device's applicability. Furthermore, the use of the main mounting frame and auxiliary frames for three-point support of the paper roll significantly enhances the stability of the support. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the installation component structure of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the adjustment component of this utility model; Figure 4 For the present utility model Figure 3 Enlarged diagram of point A in the middle.

[0017] In the diagram: 1. Frame; 2. Lifting frame; 3. Paper clamping arm; 4. Support arm; 5. Mounting components; 6. Adjustment components; 51. Base; 52. Slide groove one; 53. Sliding seat; 54. Main mounting frame; 55. Main buffer roller; 56. Double-acting lead screw; 61. Slide 2; 62. Auxiliary frame; 63. Auxiliary buffer roller; 64. Lifting lug; 65. Bolt; 66. Slide 3; 67. Opening; 68. Pointer; 69. Ruler. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4 A shaftless paper roll adjusting frame includes a frame 1, a lifting frame 2 slidably mounted inside the frame 1, and a paper clamping arm 3 mounted on the lifting frame 2 via a lead screw. A motor is mounted at one end of the lead screw, which drives the lead screw to rotate, thereby displacing the paper clamping arm 3 and adjusting its position. The paper clamping arm 3 is equipped with a support arm 4, and there are two symmetrically arranged paper clamping arms 3, allowing the support arms 4 to fix both ends of the paper roll, thus achieving shaftless fixing and unwinding of the paper roll. The lifting frame 2 is connected to the frame 1 via a hydraulic cylinder, allowing the height of the lifting frame 2 to be controlled by the lifting of the hydraulic cylinder, thereby controlling the height of the support arm 4.

[0020] Please see Figure 1 The frame 1 is equipped with an installation component 5, which is used for quick placement and positioning of the paper roll, making it easy for the support arm 4 to be aligned and clamped with the paper roll, reducing manual straightening operations, and enhancing safety and ease of installation.

[0021] Please see Figure 2 The mounting component 5 includes a base 51, which is located at the center of the bottom end of the lifting frame 2. A groove 52 is formed on the base 51, and two sliding seats 53 are slidably installed within the groove 52, arranged symmetrically. A bidirectional lead screw 56 is rotatably installed within the base 51, threadedly connected to the sliding seats 53. A motor is connected to the bidirectional lead screw 56, which drives the bidirectional lead screw 56 to rotate. This rotation causes the two sliding seats 53 to move closer together or further apart.

[0022] In this embodiment, a main mounting frame 54 is fixedly connected to the sliding seat 53. The top of the main mounting frame 54 has an inclined surface, and the contact between two main mounting frames 54 can form a "V"-shaped groove, which is used to stably place paper rolls of different diameters, so that the position of the paper roll is fixed, thus facilitating the centering and fixing of the paper roll by the support arm 4. Multiple main buffer rollers 55 are fixedly installed on the main mounting frame 54. The multiple main buffer rollers 55 are arranged in an array. The main buffer rollers 55 have a semi-cylindrical structure and are made of elastic material, which are used to buffer the paper rolls and avoid damage to the paper rolls due to their own weight and collisions during the placement and centering process.

[0023] It is worth noting that the center of the main mounting frame 54 and the lifting frame 2 are on the same horizontal line, so that the original paper roll is placed in the middle of the two support arms 4, which makes it convenient for the support arms 4 to be quickly fixed.

[0024] Please see Figure 2 An adjustment component 6 is provided between the sliding seat 53 and the base 51, which can adjust the support width of the paper roll, thereby increasing the adaptability range of the mounting component 5.

[0025] Please see Figure 3 The adjusting component 6 includes a second slide groove 61, which is located at the top of the sliding seat 53. An auxiliary frame 62 is slidably connected within the slide groove 61. There are two auxiliary frames 62, symmetrically arranged relative to the main mounting frame 54. The auxiliary frames 62 support the two ends of the paper roll, working in conjunction with the main mounting frame 54 to support the middle portion of the paper roll, thus achieving three-point support and effectively improving the stability of the paper roll. Simultaneously, the auxiliary frames 62 can slide along the slide groove 61, allowing them to support paper rolls of different widths, improving stability and adaptability. Furthermore, multiple auxiliary buffer rollers 63 are fixedly installed on the auxiliary frames 62. The shape and material of the auxiliary buffer rollers 63 are identical to the main buffer rollers 55, used for cushioning and protecting the paper roll.

[0026] It is worth noting that the cross-section of the auxiliary frame 62 is exactly the same as that of the main mounting frame 54, but the width of the auxiliary frame 62 is smaller than that of the main mounting frame 54. This identical cross-section allows the auxiliary frame 62 and the main mounting frame 54 to form a single unit for support when in contact. Even when separated, both the auxiliary frame 62 and the main mounting frame 54 provide good support for the paper roll. The smaller width of the auxiliary frame 62 reduces its footprint, effectively reducing costs without affecting performance. Furthermore, when dealing with narrow paper rolls, the auxiliary frame 62 does not interfere with the operation of other mechanisms, enhancing practicality.

[0027] Please see Figure 3A lifting lug 64 is fixedly installed on the auxiliary frame 62, and a bolt 65 is threaded through the lifting lug 64, with the lifting lug 64 in contact with the sliding seat 53. Furthermore, a sliding groove 66 is formed on the sliding seat 53, and the bolt 65 is slidably connected to the sliding groove 66, with the bolt 65 contacting the inner bottom surface of the sliding groove 66. The bolt 65 serves to limit and release the sliding lifting lug 64, and its working mechanism is as follows: When a limit is required, rotating bolt 65 causes it to move downwards, and the end of bolt 65 presses against the bottom surface of the groove 66 on the sliding seat 53. The resulting huge frictional force firmly locks the lifting lug 64 and the sliding seat 53 together, thus achieving precise positioning of the auxiliary frame 62. At this time, the contact surfaces of the lifting lug 64 and the sliding seat 53 are tightly fitted, further enhancing the overall stability in the locked state and effectively preventing the auxiliary frame from shifting due to vibration or external forces during equipment operation.

[0028] When the limit is released, rotate bolt 65 to move it upward, thereby releasing the clamping force on the bottom surface of slide groove 66. The frictional force between the lifting lug 64 and the sliding seat 53 disappears. The shank of bolt 65 can slide within slide groove 66. This design provides precise guidance and displacement space for the movement of bolt 65, ensuring smooth movement without interfering with the horizontal sliding of auxiliary frame 62. After the frictional force is released, push the lifting lug 64 to allow auxiliary frame 62 to slide freely along slide groove 61 to the new target position.

[0029] In this embodiment, an opening 67 is provided through the side of the base 51, and the opening 67 communicates with both slide groove 52 and slide groove 61. The opening 67 is located near both ends of the base 51. This ensures that when the sliding seat 53 contacts one end of slide groove 52, the opening 67 and slide groove 61 are in a connected state, thereby enabling the disassembly of the auxiliary frame 62. This allows the auxiliary frame 62 to be quickly replaced, facilitating subsequent maintenance and cleaning.

[0030] Please see Figure 3 and Figure 4 A scale 69 is provided on one side of the sliding base 53, and a pointer 68 is fixedly installed on the side of the lifting lug 64 near the scale 69. The zero point of the scale 69 is located at the center of the main mounting frame 54. The pointer 68 and the scale 69 can be used to quickly and accurately determine the positional distance between the two auxiliary frames 62, avoiding the problem that the distance between the auxiliary frames 62 is greater than the width of the original paper roll, which would lead to the inability to support and repeated adjustments.

[0031] A shaftless paper adjusting frame, the working principle of which is as follows: Adjustment: Before changing the roll, adjust the positions of the two auxiliary frames 62 according to the width of the original paper roll. The adjustment method is to rotate the bolt 65 so that the bolt 65 moves upward along the lifting lug 64 to release the limit. Then adjust the positions of the two auxiliary frames 62 separately. The auxiliary frames 62 can be moved along the second slide 61. The distance between the two auxiliary frames 62 can be controlled by the pointer 68 and the scale 69. After the position adjustment is completed, the auxiliary frames 62 are limited by rotating the bolt 65 using friction and clamping force.

[0032] Roll changing: The motor drives the lead screw to rotate, thereby moving the two paper clamping arms 3 away from each other, so that the distance between the paper clamping arms 3 is greater than the width of the original paper roll. Then, the hydraulic cylinder drives the lifting frame 2 to move down along the frame 1 to below the main mounting frame 54. The motor drives the bidirectional lead screw 56 to rotate, and the rotation of the bidirectional lead screw 56 causes the two sliding seats 53 to move closer together until they contact each other between the main mounting frame 54 to form a groove. The original paper roll is placed on the main mounting frame 54 and the auxiliary frame 62 by means of hoisting, thereby achieving rapid and stable positioning of the original paper roll.

[0033] Clamping: The height of the lifting frame 2 is controlled by the hydraulic cylinder so that the support arm 4 is aligned with the center of the original paper roll. Then, the motor drives the lead screw to rotate, thereby driving the two paper clamping arms 3 to approach the original paper roll respectively, so that the support arm 4 fixes and clamps the two sides of the original paper roll respectively.

[0034] Height adjustment: The motor drives the bidirectional lead screw 56 to rotate, thereby causing the two sliding seats 53 to move further apart, thus allowing the lifting frame 2 to move without restriction. The unwinding height of the paper roll can be controlled by a hydraulic cylinder.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaftless paper adjusting frame, comprising a frame (1) and a lifting frame (2) slidably mounted within the frame (1), wherein a paper clamping arm (3) is slidably mounted on the lifting frame (2), characterized in that: The frame (1) is provided with an installation component (5), which includes two main mounting brackets (54). The two main mounting brackets (54) can form a "V" shaped groove when they contact each other. The installation component (5) is provided with an adjustment component (6).

2. The shaftless paper adjusting frame according to claim 1, characterized in that: The mounting assembly (5) also includes a base (51), on which a first groove (52) is provided, and a sliding seat (53) is slidably installed in the first groove (52). The sliding seat (53) is fixedly connected to the main mounting frame (54). A bidirectional lead screw (56) is rotatably installed in the base (51), and the bidirectional lead screw (56) is threadedly connected to the sliding seat (53).

3. The shaftless paper adjusting frame according to claim 2, characterized in that: Multiple main buffer rollers (55) are fixedly installed on the main mounting frame (54). The multiple main buffer rollers (55) are arranged in an array. The center of the main mounting frame (54) and the lifting frame (2) are on the same horizontal line.

4. The shaftless paper adjusting frame according to claim 1, characterized in that: The adjustment component (6) includes a second slide groove (61), which is located at the top of the sliding seat (53). An auxiliary frame (62) is slidably connected inside the second slide groove (61), and multiple auxiliary buffer rollers (63) are fixedly installed on the auxiliary frame (62).

5. A shaftless paper adjusting frame according to claim 4, characterized in that: The auxiliary frame (62) has the same cross-section as the main mounting frame (54), and the width of the auxiliary frame (62) is smaller than that of the main mounting frame (54).

6. The shaftless paper adjusting frame according to claim 2, characterized in that: An opening (67) is provided through the side of the base (51), the opening (67) is connected to the second slide (61), and the opening (67) is located near both ends of the base (51).

7. The shaftless paper adjusting frame according to claim 4, characterized in that: The auxiliary frame (62) is fixedly installed with a lifting lug (64), and a bolt (65) is threaded through the lifting lug (64). The sliding seat (53) is provided with a sliding groove (66), and the bolt (65) is slidably connected to the sliding groove (66).

8. A shaftless paper adjusting frame according to claim 7, characterized in that: A scale (69) is provided on one side of the sliding seat (53), and a pointer (68) is fixedly installed on the side of the lug (64) near the scale (69).

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